Abstract: A light transmitting plate member for illuminated signals, illuminated tas or similar illuminated flat items and intended for uniform diffusion of light from a light source positioned at a side edge of the light transmitter which has a flat side and an opposing side which has a gradual slope. The plate member has a reduced thickness in the direction away from said side edge, with the opposite sides being produced with optically smooth surfaces as the light transmitting plate member includes transparent and light transparent material with specific optical properties. The side with the gradual slope is provided with a number of angled divisions which are defined by transverse divisional lines which run parallel to the side edge and which are positioned with either uniform intervals or with graded intervals which are reduced in the direction receeding from the side edge.

Abstract: An inseparable railroad train unit comprises three cars and is adapted for use selectively as a self propelled unit and as an after-coupled unit in a passenger train of the through-passage type. At least the front end of the train unit has a central window equipped door, behind which a driver's desk is provided, and around the door opening is provided a forwardly protruding elastomeric gable member, which provides for an aerodynamically advantageous shape of the front. When the train unit is after-coupled to a similar unit, the driver's desk is stowed away laterally, and the front door is opened for providing the required through passage. The elastomeric gable member now acts as a sealing and shielding element surrounding the passageway between the car and the preceding car.